Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 174, NWS Norman, OK

April 23, 1990Dewey County, Ellis County, Woodward County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Apr 23, 1990, 9:13 PM CDT for Dewey County, Ellis County, Woodward County, Oklahoma. It was in force for 47 min. 5 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Apr 23, 1990, 9:13 PM CDT (02:13 UTC)
Expired: Apr 23, 1990, 10:00 PM CDT
In force: 47 min
Issued by: NWS Norman, OK
Area: Whole counties

Counties Dewey County, OK, Ellis County, OK, Woodward County, OK

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

What was reported inside it

Time	Report	Where
Apr 23, 9:13 PM CDT	Thunderstorm Wind 78	Ellis, OK
Apr 23, 9:30 PM CDT	Hail 0.88	Ellis, OK
Apr 23, 9:30 PM CDT	Hail 0.88	Woodward, OK
Apr 23, 9:56 PM CDT	Hail 0.88	Dewey, OK
Apr 23, 10:10 PM CDT	Hail 0.88	Dewey, OK

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Dodge City, (KDDC), launched 00:00Z, 2.2 hours before the alert went out and 180 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1405 J/kg
Mixed-layer CIN: -31 J/kg
Mixed-layer LCL: 1732 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 53 m²/s²
0-3 km storm-relative helicity: 91 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.9

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Apr 23, 7:59 PM CDT, 1 hour 14 minutes before

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Special weather statement, Apr 23, 8:48 PM CDT, 25 minutes before

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The office that day

Everything else NWS Norman, OK issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 23, 8:00 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Kingfisher	60 min
Apr 23, 8:58 PM CDT	Severe Thunderstorm Warning	OUN	Major	47 min
Apr 23, 9:13 PM CDT	Severe Thunderstorm Warning	OUN	Roger Mills	47 min
Apr 23, 9:59 PM CDT	Severe Thunderstorm Warning	OUN	Custer, Dewey	46 min
Apr 23, 9:59 PM CDT	Severe Thunderstorm Warning	OUN	Woodward	46 min
Apr 23, 10:20 PM CDT	Severe Thunderstorm Warning	OUN	Roger Mills	40 min
Apr 23, 10:30 PM CDT	Severe Thunderstorm Warning	OUN	Major	45 min
Apr 23, 10:45 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Dewey	45 min
Apr 24, 12:34 AM CDT	Severe Thunderstorm Warning	OUN	Kingfisher	41 min
Apr 24, 1:13 AM CDT	Severe Thunderstorm Warning	OUN	Kingfisher	32 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1990 Every severe thunderstorm warning in 1990

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.